I wasn't so much referencing brain mapping as referencing the tenents of cognitive psychology. "Emotion" as in chemicals, neurotransmitters etc... is one thing and it is clear that these physical changes have something to do with the resulting label "I feel sad, happy or whatever" but in practice it is the thoughts that we assign to an event or statement that tend to precede whatever the resulting "emotion" becomes. E.g. Recent studies are indicating that "venting" actually increases negative emotion instead of decreasing it as popular belief would say. Giving rise to the thoughts of "this isn't fair, so and so is an idiot" seems to also cause the emotions of anger, frustration etc.... to rise.
